Fix the imports order

packages/0x.js/test/event_watcher_test.ts

@@ -1,20 +1,22 @@
-import 'mocha';
+import BigNumber from 'bignumber.js';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'mocha';
 import * as Sinon from 'sinon';
 import * as Web3 from 'web3';
-import BigNumber from 'bignumber.js';
+
+import {
+    DecodedLogEvent,
+    LogEvent,
+    ZeroEx,
+} from '../src';
+import {EventWatcher} from '../src/order_watcher/event_watcher';
+import {DoneCallback} from '../src/types';
+import {Web3Wrapper} from '../src/web3_wrapper';
+
 import {chaiSetup} from './utils/chai_setup';
 import {constants} from './utils/constants';
 import {web3Factory} from './utils/web3_factory';
-import {Web3Wrapper} from '../src/web3_wrapper';
-import {EventWatcher} from '../src/order_watcher/event_watcher';
-import {
-    ZeroEx,
-    LogEvent,
-    DecodedLogEvent,
-} from '../src';
-import {DoneCallback} from '../src/types';
 
 chaiSetup.configure();
 const expect = chai.expect;